Researchers studied the sleep positions of the couples who liked to get – and stay – a little closer, and they found that 42 percent lay back to back; 31 faced the same direction (in a spooning position); and 4 percent faced one another. Those who lay back to back or spooned reported the highest degrees of happiness in their relationships. Probably because the 4 percent facing one another were tired of breathing in the other partner's dragon breath. Researchers took sleep positions as a direct result of the relationship's progression. The lead researcher said, "The key issue is if you have a couple who used to sleep close together but are now drifting further apart in bed, then that could symptomatic of them growing apart when they are awake."